https://bugzilla.kernel.org/show_bug.cgi?id=79591
Bug ID: 79591 Summary: possible circular locking dependency detected Product: Drivers Version: 2.5 Kernel Version: 3.16.0-0.rc3.git3 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: mail@stefanringel.de Regression: No
[ 278.448193] ====================================================== [ 278.448194] [ INFO: possible circular locking dependency detected ] [ 278.448197] 3.16.0-0.rc3.git3.1.fc21.x86_64 #1 Not tainted [ 278.448198] ------------------------------------------------------- [ 278.448200] Xorg.bin/1249 is trying to acquire lock: [ 278.448201] (&(&priv->lock)->rlock#2){-.-...}, at: [<ffffffffa0108618>] nouveau_therm_update+0x48/0x350 [nouveau] [ 278.448251] but task is already holding lock: [ 278.448253] (&(&priv->sensor.alarm_program_lock)->rlock){-.-...}, at: [<ffffffffa010a284>] alarm_timer_callback+0x54/0xe0 [nouveau] [ 278.448273] which lock already depends on the new lock.
[ 278.448275] the existing dependency chain (in reverse order) is: [ 278.448276] -> #1 (&(&priv->sensor.alarm_program_lock)->rlock){-.-...}: [ 278.448279] [<ffffffff81102104>] lock_acquire+0xa4/0x1d0 [ 278.448283] [<ffffffff818113f7>] _raw_spin_lock_irqsave+0x57/0xa0 [ 278.448287] [<ffffffffa010a284>] alarm_timer_callback+0x54/0xe0 [nouveau] [ 278.448303] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448319] [<ffffffffa010c470>] nv04_timer_alarm+0x60/0xd0 [nouveau] [ 278.448334] [<ffffffffa01088d7>] nouveau_therm_update+0x307/0x350 [nouveau] [ 278.448349] [<ffffffffa010893a>] nouveau_therm_alarm+0x1a/0x20 [nouveau] [ 278.448365] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448380] [<ffffffffa010c54b>] nv04_timer_intr+0x6b/0x90 [nouveau] [ 278.448395] [<ffffffffa0105bf1>] nouveau_mc_intr+0x141/0x1c0 [nouveau] [ 278.448410] [<ffffffff81116127>] handle_irq_event_percpu+0x77/0x340 [ 278.448413] [<ffffffff8111642d>] handle_irq_event+0x3d/0x60 [ 278.448415] [<ffffffff811193e6>] handle_edge_irq+0x66/0x130 [ 278.448418] [<ffffffff8101c3e4>] handle_irq+0x84/0x150 [ 278.448421] [<ffffffff8181482d>] do_IRQ+0x4d/0xe0 [ 278.448423] [<ffffffff81812472>] ret_from_intr+0x0/0x1a [ 278.448426] [<ffffffff81415aba>] debug_dma_assert_idle+0xea/0x220 [ 278.448429] [<ffffffff811f3d75>] do_wp_page+0xe5/0x970 [ 278.448432] [<ffffffff811f6c9c>] handle_mm_fault+0x8ec/0xfd0 [ 278.448434] [<ffffffff81064379>] __do_page_fault+0x239/0x620 [ 278.448437] [<ffffffff81064782>] do_page_fault+0x22/0x30 [ 278.448439] [<ffffffff818139f8>] page_fault+0x28/0x30 [ 278.448441] -> #0 (&(&priv->lock)->rlock#2){-.-...}: [ 278.448444] [<ffffffff8110163b>] __lock_acquire+0x1abb/0x1ca0 [ 278.448446] [<ffffffff81102104>] lock_acquire+0xa4/0x1d0 [ 278.448448] [<ffffffff818113f7>] _raw_spin_lock_irqsave+0x57/0xa0 [ 278.448450] [<ffffffffa0108618>] nouveau_therm_update+0x48/0x350 [nouveau] [ 278.448465] [<ffffffffa010893a>] nouveau_therm_alarm+0x1a/0x20 [nouveau] [ 278.448480] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448496] [<ffffffffa010c470>] nv04_timer_alarm+0x60/0xd0 [nouveau] [ 278.448511] [<ffffffffa010a30d>] alarm_timer_callback+0xdd/0xe0 [nouveau] [ 278.448526] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448542] [<ffffffffa010c54b>] nv04_timer_intr+0x6b/0x90 [nouveau] [ 278.448557] [<ffffffffa0105bf1>] nouveau_mc_intr+0x141/0x1c0 [nouveau] [ 278.448572] [<ffffffff81116127>] handle_irq_event_percpu+0x77/0x340 [ 278.448574] [<ffffffff8111642d>] handle_irq_event+0x3d/0x60 [ 278.448576] [<ffffffff811193e6>] handle_edge_irq+0x66/0x130 [ 278.448578] [<ffffffff8101c3e4>] handle_irq+0x84/0x150 [ 278.448581] [<ffffffff8181482d>] do_IRQ+0x4d/0xe0 [ 278.448583] [<ffffffff81812472>] ret_from_intr+0x0/0x1a [ 278.448585] [<ffffffff81137c72>] __module_text_address+0x12/0x70 [ 278.448588] [<ffffffff8113c196>] is_module_text_address+0x16/0x30 [ 278.448590] [<ffffffff810c566a>] __kernel_text_address+0x3a/0x90 [ 278.448592] [<ffffffff8101da72>] print_context_stack+0x62/0x100 [ 278.448594] [<ffffffff8101c620>] dump_trace+0x170/0x350 [ 278.448596] [<ffffffff8102b47b>] save_stack_trace+0x2b/0x50 [ 278.448599] [<ffffffff81413529>] dma_entry_alloc+0x59/0x90 [ 278.448601] [<ffffffff81413b8f>] debug_dma_alloc_coherent+0x2f/0x90 [ 278.448603] [<ffffffffa008f755>] ttm_dma_populate+0x545/0xaa0 [ttm] [ 278.448613] [<ffffffffa015727c>] nouveau_ttm_tt_populate+0x14c/0x170 [nouveau] [ 278.448639] [<ffffffffa0084d80>] ttm_tt_bind+0x40/0x80 [ttm] [ 278.448644] [<ffffffffa008748f>] ttm_bo_handle_move_mem+0x5bf/0x650 [ttm] [ 278.448649] [<ffffffffa00883ef>] ttm_bo_validate+0x2df/0x300 [ttm] [ 278.448654] [<ffffffffa0088663>] ttm_bo_init+0x253/0x3b0 [ttm] [ 278.448658] [<ffffffffa0157c82>] nouveau_bo_new+0x202/0x310 [nouveau] [ 278.448677] [<ffffffffa015a42b>] nouveau_gem_new+0x6b/0x160 [nouveau] [ 278.448698] [<ffffffffa015a5d6>] nouveau_gem_ioctl_new+0xb6/0x220 [nouveau] [ 278.448718] [<ffffffffa003dcdf>] drm_ioctl+0x1df/0x6a0 [drm] [ 278.448733] [<ffffffffa0151a45>] nouveau_drm_ioctl+0x65/0xa0 [nouveau] [ 278.448753] [<ffffffff812628d0>] do_vfs_ioctl+0x2f0/0x520 [ 278.448756] [<ffffffff81262b81>] SyS_ioctl+0x81/0xa0 [ 278.448758] [<ffffffff818118e9>] system_call_fastpath+0x16/0x1b [ 278.448760] other info that might help us debug this:
[ 278.448762] Possible unsafe locking scenario:
[ 278.448764] CPU0 CPU1 [ 278.448765] ---- ---- [ 278.448766] lock(&(&priv->sensor.alarm_program_lock)->rlock); [ 278.448767] lock(&(&priv->lock)->rlock#2); [ 278.448770] lock(&(&priv->sensor.alarm_program_lock)->rlock); [ 278.448771] lock(&(&priv->lock)->rlock#2); [ 278.448773] *** DEADLOCK ***
[ 278.448775] 2 locks held by Xorg.bin/1249: [ 278.448776] #0: (reservation_ww_class_mutex){+.+.+.}, at: [<ffffffffa00886e1>] ttm_bo_init+0x2d1/0x3b0 [ttm] [ 278.448783] #1: (&(&priv->sensor.alarm_program_lock)->rlock){-.-...}, at: [<ffffffffa010a284>] alarm_timer_callback+0x54/0xe0 [nouveau] [ 278.448800] stack backtrace: [ 278.448803] CPU: 0 PID: 1249 Comm: Xorg.bin Not tainted 3.16.0-0.rc3.git3.1.fc21.x86_64 #1 [ 278.448804] Hardware name: System manufacturer System Product Name/M4A78LT-M, BIOS 0802 08/24/2010 [ 278.448806] 0000000000000000 000000007a5a7c22 ffff88011aa03b00 ffffffff81807cec [ 278.448809] ffffffff82bc2ef0 ffff88011aa03b40 ffffffff8180508c ffff88011aa03ba0 [ 278.448812] ffff8801185b9a40 ffff8801185b99d0 0000000000000002 ffff8801185ba5a8 [ 278.448815] Call Trace: [ 278.448816] <IRQ> [<ffffffff81807cec>] dump_stack+0x4d/0x66 [ 278.448823] [<ffffffff8180508c>] print_circular_bug+0x201/0x20f [ 278.448825] [<ffffffff8110163b>] __lock_acquire+0x1abb/0x1ca0 [ 278.448828] [<ffffffff810242de>] ? native_sched_clock+0x2e/0xb0 [ 278.448831] [<ffffffff81102104>] lock_acquire+0xa4/0x1d0 [ 278.448847] [<ffffffffa0108618>] ? nouveau_therm_update+0x48/0x350 [nouveau] [ 278.448850] [<ffffffff818113f7>] _raw_spin_lock_irqsave+0x57/0xa0 [ 278.448866] [<ffffffffa0108618>] ? nouveau_therm_update+0x48/0x350 [nouveau] [ 278.448882] [<ffffffffa0108618>] nouveau_therm_update+0x48/0x350 [nouveau] [ 278.448898] [<ffffffffa010893a>] nouveau_therm_alarm+0x1a/0x20 [nouveau] [ 278.448915] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448931] [<ffffffffa010c470>] nv04_timer_alarm+0x60/0xd0 [nouveau] [ 278.448948] [<ffffffffa010a30d>] alarm_timer_callback+0xdd/0xe0 [nouveau] [ 278.448964] [<ffffffffa010c3b8>] nv04_timer_alarm_trigger+0x138/0x190 [nouveau] [ 278.448981] [<ffffffffa010c54b>] nv04_timer_intr+0x6b/0x90 [nouveau] [ 278.448998] [<ffffffffa0105bf1>] nouveau_mc_intr+0x141/0x1c0 [nouveau] [ 278.449000] [<ffffffff81116127>] handle_irq_event_percpu+0x77/0x340 [ 278.449003] [<ffffffff8111642d>] handle_irq_event+0x3d/0x60 [ 278.449005] [<ffffffff811193e6>] handle_edge_irq+0x66/0x130 [ 278.449007] [<ffffffff8101c3e4>] handle_irq+0x84/0x150 [ 278.449010] [<ffffffff810e2145>] ? irqtime_account_irq+0xc5/0xd0 [ 278.449012] [<ffffffff8181482d>] do_IRQ+0x4d/0xe0 [ 278.449015] [<ffffffff81812472>] common_interrupt+0x72/0x72 [ 278.449016] <EOI> [<ffffffffa0084000>] ? 0xffffffffa0083fff [ 278.449023] [<ffffffff81137b39>] ? __module_address+0x29/0x150 [ 278.449026] [<ffffffff81137c03>] ? __module_address+0xf3/0x150 [ 278.449029] [<ffffffff81137c72>] __module_text_address+0x12/0x70 [ 278.449031] [<ffffffff8113c196>] is_module_text_address+0x16/0x30 [ 278.449034] [<ffffffff810c566a>] __kernel_text_address+0x3a/0x90 [ 278.449036] [<ffffffff8101da72>] print_context_stack+0x62/0x100 [ 278.449038] [<ffffffff8101c620>] dump_trace+0x170/0x350 [ 278.449041] [<ffffffff8102b47b>] save_stack_trace+0x2b/0x50 [ 278.449043] [<ffffffff81413529>] dma_entry_alloc+0x59/0x90 [ 278.449045] [<ffffffff81413b8f>] debug_dma_alloc_coherent+0x2f/0x90 [ 278.449051] [<ffffffffa008f755>] ttm_dma_populate+0x545/0xaa0 [ttm] [ 278.449072] [<ffffffffa015727c>] nouveau_ttm_tt_populate+0x14c/0x170 [nouveau] [ 278.449078] [<ffffffffa0084d80>] ttm_tt_bind+0x40/0x80 [ttm] [ 278.449084] [<ffffffffa008748f>] ttm_bo_handle_move_mem+0x5bf/0x650 [ttm] [ 278.449089] [<ffffffffa0087c59>] ? ttm_bo_mem_space+0x179/0x370 [ttm] [ 278.449092] [<ffffffff810fc24f>] ? lock_release_holdtime.part.28+0xf/0x200 [ 278.449098] [<ffffffffa00883ef>] ttm_bo_validate+0x2df/0x300 [ttm] [ 278.449100] [<ffffffff810ff72d>] ? trace_hardirqs_on_caller+0x15d/0x200 [ 278.449106] [<ffffffffa0088663>] ttm_bo_init+0x253/0x3b0 [ttm] [ 278.449126] [<ffffffffa0157c82>] nouveau_bo_new+0x202/0x310 [nouveau] [ 278.449147] [<ffffffffa0156660>] ? nv10_bo_put_tile_region+0x50/0x50 [nouveau] [ 278.449168] [<ffffffffa015a42b>] nouveau_gem_new+0x6b/0x160 [nouveau] [ 278.449189] [<ffffffffa015a5d6>] nouveau_gem_ioctl_new+0xb6/0x220 [nouveau] [ 278.449197] [<ffffffffa003dcdf>] drm_ioctl+0x1df/0x6a0 [drm] [ 278.449201] [<ffffffff810ff72d>] ? trace_hardirqs_on_caller+0x15d/0x200 [ 278.449203] [<ffffffff810ff7dd>] ? trace_hardirqs_on+0xd/0x10 [ 278.449223] [<ffffffffa0151a45>] nouveau_drm_ioctl+0x65/0xa0 [nouveau] [ 278.449226] [<ffffffff812628d0>] do_vfs_ioctl+0x2f0/0x520 [ 278.449228] [<ffffffff81262b81>] SyS_ioctl+0x81/0xa0 [ 278.449231] [<ffffffff8115fb9c>] ? __audit_syscall_entry+0x9c/0xf0 [ 278.449234] [<ffffffff818118e9>] system_call_fastpath+0x16/0x1b